题目
题型：山西省同步题难度：来源：
They say people should eat more of the same kind of food eaten by humans living more than 10,000 years
ago.1.________
The scientists say that the human life h
as changed greatly.Our bodies have not been able to deal with these changes in lifestyle and this had led to new kinds of sicknesses.2.________So they are called
"diseases of civilization"．Many cancers and diseases of th
e blood system are examples of such diseases.Scientists noted that people in both the Old Stone Age and the N
ew Stone Age enjoyed very little alcohol or tobacco,probably none.3.________However,a change in food is one of the main differences
between life in ancient times and that of today.
Stone Age people hunted wild animals for their meat,which had much less fat than domestic ones.They
ate a lot of fresh wild vegetables and fruits.They did not have milk or any other dairy products,and they
made very little use of grains.4.________We eat six times more salt than our ancestors.We eat more
sugar.We eat twice as much fat but only one third as much protein and much less vitamin C.
5．________But scientists say that we would be much healthier if we eat much the same way the
ancient people did,cutting the amount of fatty,salty and sweet food.
B．But today,we enjoy eating a lot of these.
C．In that case,they would live much healthier.
D．Ancient people also got lots of physical exercise.
E．These new sicknesses were not known in ancient times.
F．People today probably don"t want to live like our ancestors.
G．Modern people used to suffer from "diseases of civilization"．
答案
核心考点
试题【情景交际 Recently some American scientists have given a useful piece of advice to】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
productive. Some experts believe that the answer is to make jobs more varied. Do more varied jobs lead
to greater productivity? There is something to suggest that while variety certainly makes the worker"s life
more enjoyable, it does not make him work harder. So variety is not important.
Other experts feel that giving the worker freedom to do his job in his own way is important and there
is no doubt that this is true. The problem is that this kind of freedom cannot easily be given in the modern
factory with its complicated machinery which must be used in a fixed way. Thus while freedom of choice
may be important, there is very little that can be done to achieve this.
Another important consideration is how much each worker contributes to the product he is making. In
most factories the worker sees only one small part of the product. Some car factories are said to be
experimenting with having many small production lines rather than a large one, so that each worker
contributes more to the production of the cars on his line. It would seem then that the degree of workers"
contribution is important.
To what extent does more money lead to greater productivity? The workers themselves cartainly think
this is important, but perhaps they want more money only because the work they do is so boring. Money
just lets them enjoy their spare time more. A similar argument may explain demands for shorter working
hours. Perhaps if companies succeed in making workers" jobs more interesting, they will neither want
more money, nor will shorter working hours be so important to them.
B. Giving workers freedom to do their jobs in their own way.
C. Increasing workers" contribution to production.
D. Longer working hours.
interesting, ________.
B. they will demand shorter working hours
C. more money and shorter working hours are important
D. more money and shorter working hours will not be so important to them
B. possible factors leading
to greater productivityC. more money leads to greater productivity
D. how to make workers" jobs more interesting
The zebra belongs to the horse family.One of nature"s great mysteries is why the zebra has stripes.One
theory is that the stripes help the zebra cool down.On hot days the black stripes get a lot hotter than the
white area of the zebra and under the black stripes there are special layers of fat for protection.Hot air then rises off the black stripes,forcing colder air down around the white areas,cooling the zebra down.This,
however,is just a theory.The stripes can also confuse predators (食肉动物) when zebras stay with other
animals in great numbers.
Zebras have excellent hearing and eyesight and can run at a speed of up to 35 miles per hour (56
kilometers per hour)．They also have a powerful kick that can cause serious injury to a predator,like a
lion,or an African wild dog.Usually the lead male of the herd stays at the back of the group to defend
against predators if necessary,while the females and youngsters run from danger.
Zebras are herbivores and feed mostly on grasses,although they also might eat the leaves and stems (茎) of bushes a bit.They eat grasses for many hou
rs each day,using their strong teeth.Spending so muchtime chewing wears the zebra"s teeth down,so their teeth keep growing all their lives.As the dry season
arrives and the grasses die back,zebra herds travel to find more food and water holes for drinking.Most
zebras have no specific territories.They travel from place to place,never staying in one area very long.
B. The black stripes help the zebra live through cold days.
C. The zebra can easily be attacked by predators.
D. The zebra always travels with other animals.
B. animals that only eat plants
C. animals that kill and eat other animals
D. animals that live in groups
B. are used all day
C. are always growing
D. are kept clean
B. Their stripes can confuse predators.
C. They can run 56 miles per hour.
D. They usually stay in one area all their lives.
B. Everyday Tips
C. Digital Stadium
D. Discoveries
infection.A study done by University of Michigan,has shown information that seems to be true for the
general population.Babies are the most cold infected group,generally more than six colds in their first year.Boys have more colds than girls up to the age of three.After three,girls are easier to get infected with cold
than boys,and teenage girls get three colds a year to boys" two.The general cold infections continue to get
less into adults.Elderly people who are in good health have as few as one or two colds every year.One
interesting thing is found among people in their twenties,especially women,who show a rise in cold
infection,because people in this age group are most likely to have young children.
The study has also found that economy plays an important role as well.With more and more income,
the frequency at which colds are reported in the family is getting lower and lower.Families with the lowest
income usually suffer about a third ally forces people to live in rooms more crowded than rooms owned by richer people,and the crowding usually leads to more chances for the cold virus to travel from person to
person.Low income may also have an effect on our diet.Many scientists believe that a poorer diet usually
leads into more possibilities of cold infection.
1．Which of the age groups has the highest frequency of cold infection?
A．Small babies.
B．Teenage boys.
C．Adult women.
D．Elderly people.
2．The purpose of writing this passage is to________.
A．give the readers some tips to avoid cold infection
B．show a carefullmade study on cold infection
C．report the major reasons leading to cold infection
D．describe all the possible dangers of cold infection
3．How does economy play an important role in cold infection?
A．Families with lower income suffer l
ess from cold infection.B．People who have lower income enjoy living in crowded rooms.
C．Rich families can have better nutrition and never get infected.
D．People with higher income have fewer chances of infection.
4．From the passage we can infer that________.
A．age is the only important factor that connects with colds
B．families with the highest income will more easily get infected
C．people have lower frequency of infection as they grow older
D．a better diet may help people to fight against cold infection
1. Which of the following things will happen before an earthquake?
A. The water in the wells rises and falls.
B. The chickens are too nervous to eat.
C. Mice run out of the fields looking for places to hide.
D. All of the above.
2. What was the result of the earthquake?
A. Luckily,the city"s hospitals survived.
B. All of the city"s factories were gone.
C. Most of the city"s homes were gone.
D. The wind could blow the bricks on the ground away.
3. Who played the most important part in helping the people in the earthquake?
A. The soldiers and the rescue workers.
B. The college students.
C. The miners in the coal mines.
D. The injured and the dead.
4. What is the main idea of this passage?
A. The earth did not sleep that night.
B. An earthquake happened in Tangshan.
C. The animals could not sleep at night.
D. Earthquakes happen now and then.